Joshua Boyce schrieb:

Hey all. I'm working on a project which currently only compiles under MSVC. I wish to port it to compile under GCC via MinGW-w64 also, however I've hit a brick-wall with a slew of compile errors I'm getting when using Boost.Python in my project. I'm not quite sure who's "fault" this problem is... Mine? Boost? GCC? libstdc++? MinGW-w64? Something else?

I'm using TDM-GCC 4.5.1. http://tdm-gcc.tdragon.net/

Anyway, here is an example build output: http://raptorfactor.privatepaste.com/54e19acdc1

Ignore the errors in the 'MMHelper' project to do with exception routines, they are something else that I already know the cause and solution for. The problem I'm referring to is this one:

gcc.compile.c++ Scripting\bin\gcc-mingw-4.5.1\debug\address-model-32\link-static\MemSandbox\Main.o In file included from c:\mingw64\bin\../lib/gcc/x86_64-w64-mingw32/4.5.1/include/c++/cmath:629:0, from c:\mingw64\bin\../lib/gcc/x86_64-w64-mingw32/4.5.1/include/c++/random:38, from c:\mingw64\bin\../lib/gcc/x86_64-w64-mingw32/4.5.1/include/c++/bits/stl_algo.h:66, from c:\mingw64\bin\../lib/gcc/x86_64-w64-mingw32/4.5.1/include/c++/algorithm:63, from E:\Code\Boost/boost/function/detail/prologue.hpp:13, from E:\Code\Boost/boost/function/function_template.hpp:13, from E:\Code\Boost/boost/function/detail/maybe_include.hpp:13, from E:\Code\Boost/boost/function/function0.hpp:11, from E:\Code\Boost/boost/python/errors.hpp:13, from E:\Code\Boost/boost/python/handle.hpp:11, from E:\Code\Boost/boost/python/args_fwd.hpp:10, from E:\Code\Boost/boost/python/args.hpp:10, from E:\Code\Boost/boost/python.hpp:11, from Scripting\MemSandbox\Main.cpp:38: c:\mingw64\bin\../lib/gcc/x86_64-w64-mingw32/4.5.1/include/c++/tr1_impl/cmath:203:11: error: '::hypot' has not been declared

"g++" -ftemplate-depth-128 -O0 -fno-inline -w -g -m32 -std=c++0x -DBOOST_FILESYSTEM_VERSION=3 -DBOOST_PYTHON_STATIC_LIB -DBOOST_SYSTEM_STATIC_LINK=1 -DBOOST_THREAD_USE_LIB=1 -DDATE_TIME_INLINE -DUNICODE -D_UNICODE -Dnullptr=NULL -I"C:\Python27\Include" -I"E:\Code\Boost" -I"Common" -I"Dependencies" -I"Dependencies\BeaEngine" -I"Memory" -c -o "Scripting\bin\gcc-mingw-4.5.1\debug\address-model-32\link-static\MemSandbox\Main.o" "Scripting\MemSandbox\Main.cpp"

...failed gcc.compile.c++ Scripting\bin\gcc-mingw-4.5.1\debug\address-model-32\link-static\MemSandbox\Main.o...

I'm at a loss as to how to fix this. I'm suspecting it's a MinGW problem, but I'm unable to find anybody else who has had or is having the same problem...

[snip]

If anyone could shed some light as to what's going wrong here and how I might fix it I'd really appreciate it. Thanks in advance.

It's Python. Out-of-the-box Python 2.7 pyconfig.h on Windows defines hypot as _hypot which subsequently cripples the declaration of hypot in <math.h> and ultimately breaks the using declaration in <cmath> . A simple fix is to include <cmath> before including <boost/python.hpp> . Other than that, you may try configuring python yourself via autoreconf. BTW. nice project. Keep up the good work! -Christopher